1. Keep blabbering constantly
2. Pluck their hair
3. Enter their room without knocking
4. Pick your nose
5. Argue for no reason
6. Ignore them
7. Hit them with a bat
8. Throw lizards on them
9. Pull their nose
10. Kick them
11. Bite their fingers
12. Keep shouting the whole day
13.Ask them to meet you at a certain place, and don't come there yourself.
14. Steal their belongings.
15.Ask them to come to your house but lock the door and go for a vacation.